[FRIAM] bespoke turbulence

[Roger Critchlow]

I was going to post the University of Chicago press release,
https://phys.org/news/2023-06-tempest-teacup-physicists-breakthrough-turbulence.html,
but let it slide until this other article turned up,
https://phys.org/news/2023-06-approach-properties-turbulence.html, the
original report is paywalled at
https://www.nature.com/articles/s41567-023-02052-0 with a paywalled
editorial comment https://www.nature.com/articles/s41567-023-02054-y.

Oh, and there's also https://arxiv.org/abs/2211.00771.

So you put your fluid in a cubic reservoir with a vortex ring gun at each
corner of the cube aimed at the center of the cube.  You can make free
floating blobs of turbulence in the center of the reservoir by shooting
combinations of vortex rings.  Vary the combinations of vortex rings and
you vary the properties of the turbulent blob.  So for whatever varieties
of turbulence you can synthesize and instrument, you now have an analog
computer for finding properties and calibrating your digital simulations.

-- rec --
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